CT Scan (General)

Definition

A CT scan uses x-ray technology to take multiple views of the inside of the body. Compared to
regular x-rays, a CT scan can take clearer and more detailed images of organs, bone, soft tissue, blood vessels, and other parts of the body.

Possible Complications

Complications are rare, but no procedure is completely free of risk. If you are planning to have a CT scan, your doctor will review a list of possible complications. These may include:

Allergic reaction to contrast material

Damage to the kidney from contrast material

Factors that may increase the risk of complications include:

Allergies (if you are given a contrast dye during the test)

Kidney problems (if you are given a contrast dye during the test)

You are exposed to some radiation during a CT scan. Radiation exposure can increase your lifetime risk of cancer. This risk increases the more times you are exposed to radiation. Radiation exposure is more concerning for pregnant women and children. CT scans are usually not recommended for pregnant women.

A healthcare professional will explain the test and answer any questions you may have.

You will remove your clothes and put on a gown or robe.

You will remove all jewelry, hair clips, dentures, and other objects that could show on the x-rays and make the images hard to read.

If your CT scan includes oral contrast material, you will need to drink the contrast material at this time.

Description of the Test

You will lie (usually on your back) on a movable bed. The bed will slide into the donut-shaped CT scanner. Depending on the type of scan, an IV line may be placed in your hand or arm. A saline solution and contrast material may be injected into your vein during the test. The technologist will leave the room. You will be given directions using an intercom. The machine will take a series of pictures of the area of your body that is being studied. Your bed may move slightly between pictures.

After Test

You will need to wait for the technician to review your images. In some cases, more images will need to be taken.

How Long Will It Take?

About 10-15 minutes, depending on how many pictures are needed.

Will It Hurt?

You may feel warm and flushed if contrast material is injected into your vein. Otherwise, you should feel no pain.

Results

The CT images will be sent to a radiologist who will analyze them. Your doctor will receive the results and discuss them with you.

Revision Information

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.